Improvement in spring-hinges



H. N. HEMINGWAY.

Improvement in Spring-Hinges.

No. 130,998. Patented Sep.3,1872.

77? in eases:

In van Zor:

. UNITED STATES PATENT OFFICE.

HENRY N. HEMINGXVAY, OF ROCHESTER, NEW YORK.

IMPROVEMENT IN SPRING-HINGES.

Specification forming part of Letters Patent No. 130,995, datedSeptember 3, 1872.

SPECIFICATION.

Be it known that I, HENRY N. HEMINGWAY, of Rochester, in the county ofMonroe and State of New York, have invented certain Improvements inWindow-Blind Hinges, of which the following is a specification:

My invention relates to that class of blindhinges having a verticalspring so applied as to secure the blind'in position when open orpartially open; and it consists more especially in the employment of awire or frictional spring fixed in an upright position to one portion ofthe hinge, and arranged to act upon the other portion by lateralpressure, so as to secure the hinges in any desired position, and at thesame time to prevent the blinds from being easily unhinged.

Figure 1 is an elevation of an ordinary hinge of this class in an openposition, having my invention attached. Fig. 2 is an inverted view ofthe same, showing the loose portion B half-way open in full lines andclosed in dotted lines.

A represents the pintle part or fixed portion of the hinge; B, the looseor swinging portion; 0, the pintle; and D, the spring. The circularenlargement b at the base of the pintle is provided with severalrecesses, a, c, and e, Fig. 2, for the spring to catch in. Others may beadded at intermediate points, if desired. Said enlargement b is somewhatconical, as shown in Fig. 1, and by inserting the spring D into thesocket f obliquely to the axis of the hinge, or otherwise fitting it tothe conical face of the enlargement b, the loose port-ion B of the hingeis thereby securely attached to the other, thus preventing the blindfrom being lifted off or unhinged by the wind or otherwise while it isbeing swung open orclosed, or at any other time.

It will be seen that this constitutes a very simple and cheap hinge, aswell as an efficient one, for it affords all the desirable advantages ofthis class of spring-hinge.

There is no mechanical fitting required in putting these hingestogether, except to drill one hole for the reception of the wiresprings, which latter are cut into proper lengths, and, after beinginserted, are slightly upset or riveted at the upper end.

If desirable, both ends of the spring might be fixed and the center madeto Work on the enlargement; or the spring may be fixed to the maleportion Act the hinge, if desired; but I prefer the arrangement of theparts as shown.

The socket f is formed by using two drills, that drilling the upperportion being smaller than the other and the upper end of the spring ismilled to fit s'uch portion, thus providing a shoulder within the socketto prevent the spring from being pressed through the latter while thetwo portions of the hinge are being united. Instead of the drilledsocket f, the springs, whether flat or round, might be driven throughbetween three lugs provided on the wing B, and having their contiguoussides curved or notched to retain the spring so inserted.

The ordinary spring blind-hinge is found to be objectionable in usebecause the blind is thrown from one point to another, either opening orclosing with considerable force, while with my construction it is movedwith uniform friction from point to point, as desired, where it issecured by the spring simply dropping into therecess in the edge of theenlargement; or by using a sufficiently-stifi' spring the recesses mightbe dispensed with.

This may very readily be adapted for a selfclosing gatehinge by makingthe base I) scroll shaped, concentric from 0 toward or to the point a.The enlargement I) might be made cylindrical, and a lip formed on thelower end of the spring, if preferred.

1. The improved spring-hinge, consisting of the fixed part A, carryingthe pintle G, and the loose or swinging part B, to which is cast orotherwise attached, at f, the wire or other friction spring D invertical position, all as described and shown, for the purposes setforth. 2. The spring D, in combination with the circular enlargementb,with or without the recesses or indentations a, c, and e, actingconjointly, as and for the purposes set forth.

HENRY N. HEMINGWAY.

Witnesses WM. S. LOUGHBOROUGH, PATRICK MoI vrYRE.

